Pipe cutter



Dec. 1, 1931. w. o. THEWES PIPE CUTTER Filed Aug. 25, 1926 .lll ll INE OR` mmmw Patented Dec. l; 1931 UNITED STATES PATENT OFFICE vWILLIAIM 0F NORTH RIDGEVILLE, OHIO l PIPE GUTTER.

Application led August 25,1926. Serial No. 181,399.

which the blade or .blades will be'protected against breakage.

Another object is to provide means for easily removing or changing blades which will normally support and retain them properly in place.

Another object is to provide a cutter which may be readily and economically manufactured.

Another object is to providea cutter handle which may be used as a socket wrench.

Other objects will hereinafter appear.

The invention will be better understood from the description of one practical embodiment thereof illustrated in the accompanying drawings, in which- Fig. 1 is a side elevation of the pipe cutter;

Fig. 2 is a central longitudinal section thereof;

Figui is a front elevation;

Fig. 4 is a section taken on line IV-IV of Fig.l 2*; y

Fig. 5 is a top view of the slide provided with blades instead of rollers;

Fig. 6 is an axial section of the cutting blade and hub;

fig. 7 is a section on the line VII-VII of Fig. 6; and

Fig. 8 is a view similar to Fig. 6 but showing a modified form of blade.

The cutter comprises a C'shaped frame 1 provided at one end with a stationary pin or shaft 2 for a cutting blade 3. Preferably, the frame is of V-shaped cross section as shown in Fig. 3 and may be stifened by transverse struts 4 which may convenientlybe cast integrally therewith.

Along thel outer edges of the frame extend flanges 5 which serve as ways for a cross head or slide 6 movable toward and from blade 3, the slide being moved by a screw` 7 threaded at 8 through the opposite end of the frame and actuated by a handle 9.

The slide is preferably of one piece and has in its top an inwardly extending recess 10 for ,tion engage the fianges 5 of the frame.

vto the cutter blade.

the reception of the headed end of screw 7. On the inner side of the slide are, inwardly extending fianges 11 which in assembled posi- Both sets of flanges have sections cut away as at 12 to permit the slide being moved laterally at Y its position nearest the cutter blade to engage or disengage the. flanges.

.Two rollers 18 are carried by the slide and adapted to engage a pipe on the side opposite v Where thefcutter is to be used in places in which it cannot be moved completely around the pipe the rollers may be replaced by additional cutter blades as shown at 13a in Fig. 5. The rollers rotate on pins 14 similar to pin '2.I

The frame extends below and beyond the cutter blade and protects this on every side except that toward the slide. The frame terminates in an upwardly extending lip 15, so positioned that one ofthe rollers 13 will contactwith it before either can touch the blade, these rollers, in their eXtreme position, being indicated by the dot and dash circles in Fig. 1. This also prevents the flanges llbecoming aligned with notches 12, except when the outer roller is removed, and thus prevents accidental lateral displacement thereof.-

The cutters are preferably made as shown i in Fig. 6 and each consists of a narrow blade mounted on a hub 16 which has a shoulder 17 supporting one side of the blade, the other side being enga-ged by a nut or sleeve 18V threaded' on the hub. The hub is notched as shown at 19 and the blade has a. projecl tion engaging this notch to prevent it from rotating on the hub and thus loosening 'the nut. Both the hub and sleeve are provided with flattened surfaces 20 forengagement by a wrench.

Al convenient wrench for the cutter parts is provided by Hanging the ends of the tubular handle inwardly and cutting the fianges away to leave openings provided with flattened sides 21 adapted to fit the flattened portions ofthe hub and sleeve.

In Fig. 8 a modified form of blade 3a 1s shown which is made integrally withy its hub 16a. l n

The pins 2 and 14 are each provided at one loo end with a head' having flattened sides which are received in recesses, so that the heads are protected from contact with external objects and the pins kept from turning and consequently wearing the apertures in the frame and slide. .The smaller ends of the pins are provided with peripheral grooves and have spring rings 22 therein to retain the pins.

in place. These ends are also positioned in recesses to prevent displacement of the pins by contact with'external objects.

WhileI have described the illustrated embodiments of mv invention vwith some parto form a recess in opening toward the inside of the C, a'roticularity,

it is obvious that many other embodimentswill readily occur to those skilled in this art and I do not, therefore, limit myself tothe precise details shown and described, but claim as my invention all such embodiments and' all variations and modifications thereof coming within the scope of the subj oined. claims.

I claim:

1. A pipe cutter including a substantially C shaped frame of hollow cross section, a

vscrew threaded through one end thereof,

guides onv the intermediate portions of the frame, a slide movable along the said guides by said screw, the 4wall of the frame removed lthe end of the frame tatable cutting blade journaled in said recess, the frame surrounding the bladelon all sides except that towards the slide and having a projection at the extremity of the C adapted to engage the slide rollerI and prevent Athe slide from contacting the blade.

v 2. A pipe cutter including a frame of ho`l section. a screw threaded low V shaped 'cross guides on'the inthrough one end thereof,

.-termediate portion of the frame and a slide movable along the said guides bv said screw, the wall of the frame removed to form a recess in the endvof the frame opening toward the insidek of the C, a rotatable cutting blade in said recess. the frame surrounding the blade on all sides except that towards the slide and' having a projection at thejextremity of the C -adapted to engage a ,roller upon the slide and prevent the slide from contacting the blade.

3. A pipe cutter including a. substantially C-shaped frame, guides onsaid frame, a slide movably mounted on said guides, a cutting blade mounted in one extremity of the frame, means for advancing and'retracting said slide relatively to said, blade, one

or more rollers on said slide. and a .projection formed on the frame adjacent the cutting blade and adapted to engage one of said rollers and prevent the latter from contacting with the blade.

4. A pipe cutter including a substantially vent the roller 1,sss,eso

' screw threaded thru lone end thereof, guides on the intermediate. portion of the frame,

a slide movable along the said guides by said screw, the wall of the frame being re-v moved to form a. Arecess, in the end of the frame openin'g toward' the inner side of the C, a rotatable cutting blade journaled insaid recess, the frame surrounding the blade on all sides except that towards the slide and having a projection adjacent the cutter adapt- 'ed to engage the slide roller and prevent the latter from contacting the blade.

6. A pipe cutter .including a substantially C-shaped frame of ihollowA cross section, guides on frame, al slide movably m'ounted 4on said the intermediate portion of the guides, a palr of rollers on said slide, a screw threaded through one end of the frame ,for

advancing and retractingesaid slide, the one end wall ofthe frame ing formed with a recessl opening toward the inner side of the frame, a rotatable cutting blade journaled in said recess, the frame y' surrounding the blade on'all sides except that towards the slide and having a rojection adapted to engage one of the sli e rollers and prefrom contacting the blade, said screw terminating in a handle `serving also as a wrench for the cutter parts.

In'tes'timony whereof I hereunto aiiix my.

21st dayof Au st, 1926.

signature .this

* WILLIAM O. HEWES.Y

C-shaped frame, guides on saidframe, a

slide movably mountedvon said guides and having one or more rollers rotatably mount- 

